Roofing machine



Oct. 23 1923.

1,471,493 'r. J. LORDS ET AL.

ROOFING MACHINE Filed Nov. 5 1920 4 Sheets-$heet 1 irfdezziazifi WaadezzJ [0Zd 5 fax/zk/d FA /maxi? Oct. 23, 1923.

T. J. LORDS ET AL ROOFING MACHINE Filed Nov. 5. 1920 4 Shuts-Shut I m% wNW m Oct. 23, 1923. 1,471,493

T. J. LORDS ET AL ROOFING MACHINE Filed NOV. 5, 1920 4 Sheets-Sheet 5 mmM W I QM W QM MW. 1 F mm, 9%

Oct. 23,1923. 1,471,493

T. J. LORDS ET AL ROOFING MACHINE Filed Nov. 6, 1920 4 Shuts-Shut 4Patented Oct. 23, 1923.

UNITED STATES PATENT OFFICE.

'rnanmrus J. Loans AND GARFIELD r. LENNABTZ, or cnrcaeo, farmer's,'ASSIGHOBS 'ro sauna, aonnocx AND 00., or cmcaoo, ILLINOIS, a coaroamxonor NEW YORK.

ROOFING MACHINE.

Application filed November 5, 1920. Serial No. 421,910.

To all whom it may concern:

Be it known that we, THADDEUS J. Loans and GARFIELD P. LENNARTZ,citizens of the United States, residing at Chicago, in the county ofCook and State of Illinois, have invented certain new and useful Improvements in Roofing Machines, of which the following is a specification.

Our invention relates to the manufacture of protective material forcovering the roofs and walls of buildings, and more specifically to animproved machine for manufacturing roofing. Such roofing is ordinarilsurfaced with ground slate or other weat er resisting material, androofing having a pattern formed thereon, so as to look like shingles ortile for instance, resents a much more attractive appearance t anroofingrhaving a uniform surface.

he object of our invention is to provide a machine for producing suchroofing quickly and economlcally.

Further objects and advantages of our invention will become apparent asthe description proceeds.

In the accompanying drawings, Figure 1 is a diagrammatic view of anentire roofing machine of which our improved surfacing device forms apart. Fi 2 is an end view of the device itself, and Flg. 3 is alongitudinal section on the line 3-3 of Fi 2. Fig. 4 is a transversesection of the evice, and Fig. 5 is a fragmentary view of the innerstencil. Fig. 6 IS a section taken on the line 6-6 of Fi 5. Fig. 7 is adetail section on line 7-4 0 Fig 2.

In the embodiment of our invention selected for illustration, the paperP may be drawn from a suitable source of supply, such as a roll 10, andis first passed through take-u rollers 12. The upper rollers are movab yconstant rate to permit the rest of the ma chine to receive paper at acontsant rate without taking aper from the roll 10. This makes itpomiblia when the end of a roll is reached for the workman to cement onthe end of a new roll without stopping the entire machine. After passingover rollers 12 the pa er passes over other rollers 14 into an out of abath of tar, asphaltum or other suitable substance with which it is moreor less thoroughly impregnated. From this bath it passes under a pipe 16which mounted and may be lowered at a deposits material on the movingstrip and between a stationary pair of rolls 17 by means of which thematerial is spread out into a smooth, uniform coating over the surfaceof the paper. Excess coating material may fall off the edges of thestrip of paper and be collected in a suitable receptacle, not shown. Theupper roller 17 is preferably made vertically adjustable for controllingthe thickness of the coating spread on the paper. The foregoing elementsbeing old and well known in the art and constituting no part of ourpresent invention, more detailed disclosure of the same is deemedunnecessary.

Various combinations or sets of devices for applying ground material orsurfacing to one or both sides of the roofing may act on the same afterit passes through the roller 17. We have shown two such arrangements inFig. 1,. the one shown in full lines comprising means for passing thepaper under a feeding device 18, around a large roller which pressesmost of the surfacing deposited by the device 18 into the coatingapplied by pipe 16, another roller 19 employed merely for convenience inreversing the direction of the strip, and a final air of rollers 21which press the material carried by the strip a second time after thetemperature of the strip has been considerably reduced from thatprevailing adjacent the roller 20. A scra er blade 23 is preferablyprovided to rect surfacing in excess of what will adhere to the stripoff the descending side of roller 20 into a receiving chute 25 to conveyit back to the main supply. A hopper 27 is ordinarily ositioned so as tocoat the reverse side of the paper with ground material, usually finepowdered mica. The same plant may be empltiyed to produce paper coatedwit fine pow ered mica on both sides by passing the paper along the pathshown in dotted lines to receive coatings of suitable material on bothsides from other hoppers 27.

The device 18 for feedin surfacing material is illustrated more in etailin Figs. 2, 3 and 4. A pair of standards 24 and 26 support a stationaryshaft 28 which in turn supports two spiders 30 and 32. A cylinder 34 isfastened at its ends to the spiders 30 and 32 completin the mainframework of the machine. T e cylinder 34 has a. longitudinal slot 36beneath which the paper P is carried, passing over a support 38 suitablymounted on vertical bolts 40 adjustable in height by means of nuts 42.

Within the cylinder is a hopper comprising inclined plates 44 and 46suitably reinforced by angle members 48 and coopcrating with a feedroller'50 to hold the ground material with which the paper is to besurfaced, and deliver it at a uniform rate. The rate of discharge may beconveniently adjusted by means of a gate 52 in the nature of a slidableplate the position of which may be controlled by rotating a shaft 54carrying pinions 56 meshing with racks 58 mounted on the plate 52. Theclearance between the edge of the gate 52 and the roller 50 determinesthe rate of discharge, the material being carried out by the roller anddropped between converging guide plates 60 which direct the stream ofmaterial through the slot 36. The supply of material in the hopper maybe replenished through holes 62 in the upper portion of the cylinder. Itwill be seen that if the slot 36 were totally unobstructed the paperpassing below the same would receive a uniform layer of ground materialover its entire surface.

We have provided means for interrupting the flow of material through theslot 36 to produce a pattern or the paper. This means comprises in thepresent device, a pair of stencils 64 and 66 rotating inside and outsidethe c linder 34 and cut so as to inter rupt the ow of surfacing throughthe slot in such a. way as to produce the desired pattern. The outerstencil 66 is driven at a surface speed [gacticallyidentical with thatof the paper and moves almost in contact with the paper. Each part ofthe stencil will therefore prevent the deposit of surfacing on the areawhich it covers as it passes by the slot, producing a sharply defineduncoated area. The inner stencil 64 is driven at the same rotary speedas the outer stencil so as to remain in perfect register therewith andfunctions to interrupt nearly all the material which must be diverted toproduce the pattern. so that the outer stencil 66 merely functions tosharpen the outlines of the pattern. The longitudinally extendingportions of the inner stencil 64, as clearly illustrated in Fig. 6, areequipped with carriers 68 in the nature of small angle bars which catchthe ma terial interruptedand carry it up around the inside of thecylinder as shown in Fig. 4 to a position above the hopper where theinversion of the parts will allow the material to fall back again intothe hopper. The accumulation of excess ground material in the bottom ofthe cylinder is thus efiectively prevented.

As the strip passes around the roller 20 and is tipped into anapproximately vertical position, articles of surfacing not yet pressedinto t e strip would naturally tend to fall from the edges of thecovered areas into the adjacent uncovered areas and blur the outlines ofthe pattern. To eliminate this tendency we provide means for apply ing apreliminary pressure to the strip before it has been tipped by movementaround roller 20 to an angle steep enough to permit of such fallingaction. In Fig. 1 we have illustrated a roller 79 pressed against thelower side of roller 20, preferably by a counterweight such as 81.Rollers 21 and the mechanism receiving the strip therefrom ordinarilyexert a considerable tension on the strip so that during its entirepassage around roller 20 the strip is firmly pressed against the roller,but the use of roller-79 forces the material into place sufficiently toprevent subsequent blurring of the outlines during the passage of thestrip over the upper portion of the roller 20. In changing over to usehoppers 27 roller 79 may obviously be shifted out of the way, or evenremoved entirely.

Any suitable power driven transmission may be employed to actuate theparts above described. We have illustated a gear 70 on a longitudinallyextending shaft 72, which shaft carries two pinions 74 meshing with theouter gear teeth of two double gears at opposite ends of the cylinder,each double gear comprising a sleeve 76 having gears 78 and 80 formed atits ends. .The gears 78 are also in mesh with gears 79 on the rollershaft 82 to drive the feed roller 50 and the inner gears 80 are each inmesh with intermediate drive pinions 84 (see Fig. 7) which in turnengage internal teeth on rings 86 carried by the outer stencil. Shortshafts connect the pinions 84 for the outer stencil to similar pinions87 driving the rings 88 which carry the inner stencil so that bothstencils are driven at the same rotary speed.

While we have illustrated and described in detail the preferredembodiment of our invention, it should be clearly understood that thedisclosure is merely for purposes of illustration and that manymodifications and variations will naturally occur to those skilled intheart. We aim in the subjoined claims to cover all such legitimatevariations and modifications.

We claim as our invention:

1. In a device of the class described, a stationary element having aslot in its lower portion. means for moving a strip past below saidslot, means for discharging a stream of material throughsaid slot forcoating said strip, and means above said slot for interrupting the flowof material to form a pattern on the strip.

2. In a device of the class described, a

stationary cylindrical structure having a slot in its lower portion,means for moving a strip past below said slot, a stencil moving outsidesaid cylindrical structure having' the same surface speed as the strip,and a stencil moving inside the structure having the same rotary speedas the outer stencil, said cylinder having apertures in its upperportion through which ground material may be injecte 3. In a device ofthe class described, a stationary cylindrical structure having a slot inits lower portion, means for moving a strip ast below said slot, astencil moving outsi e said cylndrical structure having the same surfacespeed as the strip, and a stencil moving inside the structure having thesame rota speed as the outer stencil.

4. n a device of the class described, a stationary cylindrical structurehaving a slot in its lower portion, means for moving a strip past belowsaid slot, a stencil moving outside said cylindrical structure havingthe same surface speed as the strip, and a stencil moving inside thestructure havin the same rotary speed as the outer stenci said innerstencil having means for conveying material from the ower portion of thecylinder to the upper portion and there dropping it.

5. n a device of the class described, a moving stencil, means fordischarging a stream of material through the lower part of said stencil,and means carried by said stencil adapted to retain the materialinterrupted by the stencil in its movement and carry it around and up tothe upper portion of the stencil.

6. In a device of the class described, a rotating cylindrical stencil,storage means inside said stencil, means for rotating said stencil andfor discharging a stream of material from said storage means through thelower part of said stencil, and carriers on said stencil adapted toretain material interrupted by said stencil and carry it up to the upperportion of the stencil where the inversion of the carriers will allowthe material to fall back into the storage means.

7. In a device of the class described, spaced standards, a stationaryshaft supported by said standards, a tubular structure stationarilysupported by said shaft, said structure having a slot on its lowerportion, means inside of said structure for delivering a stream ofmaterial through said slot, and a tubular stencil rotatabl supported onthe outer periphery of sai tubular structure, said stencil belngconstructed so as to intermittently shut off the flow of materialthrough said slot.

8. In a device of the class described, spaced standards, a stationarvshaft supported at its ends by said standards, a tubular structurestationarily supported by said shaft, and a tubular stencil rotatably suported in the inner periphery of said tubuar structure.

9. In a device of the class described, a stationary cylindricalstructure having a slot in its lower portion, means for moving a strippast below said slot, 21 stencil moving outside said cylindricalstructure and another stencil moving inside the structure, and means fordelivering a stream of material to fall through said slot.

10. In a device of the class described, a stationary cylindricalstructure having a slot in its lower portion, means for moving a strippast below said slot, a stencil moving outside said cylindricalstructure and another stencil moving inside the structure, and means fordelivering a stream of material to fall through said slot, said innerstencil having carriers for conveying material accumulating in the lowerportion of the cylinder to the upper portion and there dropping it.

,11. In a device of the class described, spaced standards, a stationaryshaft supported in said standards, a tubular member supported on saidshaft, a stencil sup orted at the outer periphery of said mem stencilsupported at the inner periphery of said member, and means to producerelative movement between said member and said stencils.

In testimony whereof we have hereunto set our hands.

THADDEUS J. LORDS. GARFIELD P. LENNARTZ.

